|Directional Core Drilling for Mineral Exploration
« SAVE TIME, MONEY AND METRES »
Directional Core Drilling allows controlled deviation of the borehole path and/or multiple
branches from a parent hole, saving the cost, effort and uncertainty involved in multiple single
If your project needs multiple planned drill holes or accurate planned trajectories then DCD
may be a cost effective and efficient solution.
DEVICO offers a DCD rental package to clients using highly skilled and experienced
technicians world wide.
There are many benefits using DCD in your exploration project. A few of them are listed here.
Compared to standard wireline drilling (re-drilling from surface):
Compared to other directional drilling techniques:
Overview: Coring While Steering
The Devico Directional Core Drilling (DCD) service includes:
Directional Core Drilling
Core drilling for minerals normally consists of drilling long sections
in bedrock before reaching the ore horizon, making the process more
time consuming and expensive than necessary. In addition, natural deviation
can change the drill path and reduce the value of the information gained
from the borehole.
With Devico technology you can complete a drilling program
quicker, and with higher accuracy than with traditional core drilling methods.
The Devico technology makes it possible to control
borehole deviation and steer the hole accurately
towards the target, while also collecting core samples during the steering
process. When the first hole is finalized it can be sidetracked and used again
to steer towards a second target. Sidetracking means a new hole is started
from within the old, often several hundred meters below surface.
With this approach there is no need to move the drill rig to a new site
and re-drill the top section collecting core from rock formations of no value.
The sidetracking is quickly performed by cutting straight in a curved section
of the first hole. By using this method no wedges or cement plugs are
necessary. Making several branch holes will significantly reduce the length
of a drilling program, which can lead to remarkable
savings in both time and money. As less drill sites are
required the environmental impact of the drilling program is also reduced.